import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/myExam',
    children: [
      {
        path: 'myExam',
        name: 'myExam',
        component: () => import('@/views/dashboard/index'),
        meta: { title: '我的考试', icon: 'dashboard' }
      },
      {
        path: '/uc',
        component: () => import('@/views/user/index'),
        hidden: true
      }
    ]
  },

  {
    path: '/repo',
    component: Layout,
    meta: { title: '题库管理', icon: 'dashboard' },
    children: [
      {
        path: 'list',
        name: 'repo-list',
        component: () => import('@/views/repo/RepoList.vue'),
        meta: { title: '题库列表', icon: 'dashboard' }
      },
      {
        path: 'add',
        name: 'repo-add',
        component: () => import('@/views/repo/RepoAdd.vue'),
        meta: { title: '题库添加', icon: 'dashboard' }
      }
    ]
  },
  {
    path: '/qu',
    component: Layout,
    meta: { title: '题目管理', icon: 'dashboard' },
    children: [
      {
        path: 'list',
        name: 'qu-list',
        component: () => import('@/views/qu/QuList.vue'),
        meta: { title: '题目列表', icon: 'dashboard' }
      },
      {
        path: 'edit',
        name: 'qu-edit',
        component: () => import('@/views/qu/QuEdit.vue'),
        meta: { title: '题目添加', icon: 'dashboard' }
      }
    ]
  },
  {
    path: '/exam',
    component: Layout,
    meta: { title: '考试管理', icon: 'dashboard' },
    children: [
      {
        path: 'list',
        name: 'exam-list',
        component: () => import('@/views/exam/ExamList.vue'),
        meta: { title: '考试列表', icon: 'dashboard' }
      },
      {
        path: 'edit',
        name: 'eaxm-edit',
        component: () => import('@/views/exam/ExamEdit.vue'),
        hidden: true
      },
      {
        path: 'preview',
        name: 'eaxm-preview',
        component: () => import('@/views/exam/ExamPreview.vue'),
        hidden: true
      }
    ]
  },
  {
    path: '/paper',
    component: Layout,
    hidden: true,
    children: [
      {
        path: 'index',
        name: 'paper-index',
        component: () => import('@/views/paper/index.vue')
      }
    ]
  },

  // {
  //   path: '/example',
  //   component: Layout,
  //   redirect: '/example/table',
  //   name: 'Example',
  //   meta: { title: 'Example', icon: 'el-icon-s-help' },
  //   children: [
  //     {
  //       path: 'table',
  //       name: 'Table',
  //       component: () => import('@/views/table/index'),
  //       meta: { title: 'Table', icon: 'table' }
  //     },
  //     {
  //       path: 'tree',
  //       name: 'Tree',
  //       component: () => import('@/views/tree/index'),
  //       meta: { title: 'Tree', icon: 'tree' }
  //     }
  //   ]
  // },

  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () =>
  new Router({
    // mode: 'history', // require service support
    scrollBehavior: () => ({ y: 0 }),
    routes: constantRoutes
  })

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter () {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
